Bureau County is a county located in the U.S. state of Illinois. As of the 2000 census, the population was 35,503. Its county seat is Princeton, Illinois.
History
Bureau County was organized in 1837. It is named for Pierre de Beuro, a "half-breed" (French and Native American?), who, around 1818, established a trading post near where Bureau Creek empties into the Illinois River. Like so many other areas in the Midwest, this county was on a "line" of the Underground Railroad. There was a "station" at the home of Owen Lovejoy in Princeton.
